Human Devolution vs Project Clean Earth
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Human Devolution
Test your memory and reaction time with this simple yet challenging game. Numbers appear in sequence, and your goal is to tap them in the correct order. Compete against your own scores and see if you can outperform a chimpanzee's memory.
- Sequential number tapping
- Memory challenge
- Reaction time test
- Simple game rules
- Score comparison
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According to the experiment, the chimpanzee seems to be able to memorize nine number in 0.2 seconds. If the ancestor of man is a monkey, you should be able to do. This game rule is simple, and understood by the monkey. 1 through 9 appear numbers in order to press. Now let's challenge the chimpanzee!
Project Clean Earth
Embark on a survival adventure in a retro pixel world. Cleanse a radiation-contaminated Earth of mutant creepers using "Bernard," mankind's last weapon. Enhance your abilities with a variety of weapons, drones, and artifacts to complete the Earth Clean Project.
- Retro pixel graphic apocalypse world
- Sci-fi story and survival action
- Strengthen character with weapons, drones, artifacts
- Strategic weapon and drone combinations
- Random artifacts and events for replayability
- Discover mutant monster attack patterns
- New stages and modes as you grow stronger
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Rougelite + Hack'n Slash! An exciting apocalypse world view hidden in a retro pixel graphic. Sci-fi story and exciting survival action. Earth contaminated with radiation. to clean up the Earth that's left only the mutant creeper The last weapon of mankind, "Bernard," has come. Strengthen Bernard with dozens of weapons, drones, artifact items and various events! Complete the Earth Clean Project! - Strategically combine various weapons and drones, including short distance, long distance, and wide area. - Loglight Ryu's random artifacts and events are added to play new every time. - Find out the attack patterns of various and distinctive mutant monsters and target them - New stages and modes that increase as I become stronger Enjoy the new Rougelite Hack'n Slash now!
Screenshots
Verdict
The clearest difference is review sentiment: Human Devolution at 100% against Project Clean Earth's 47%. Human Devolution also leads on in-app purchases (none vs 16) and ads (none vs shown). Project Clean Earth's advantage is price (Free vs $0.99) and update cadence (every 3 weeks vs every 38 months). On device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Project Clean Earth is free to download; Human Devolution costs $0.99 up front. Project Clean Earth sells 14 one-off in-app purchases. Human Devolution asks for nothing beyond the download.
Human Devolution ships an update every 38 months, Project Clean Earth every 3 weeks. The most recent releases landed on August 22, 2026 and September 30, 2026 respectively.
| Parameter | Human Devolution | Project Clean Earth |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 4.7 (1.9K ratings) — better |
| Positive reviews | 100.0% of reviews — better | 47.2% of reviews |
| Number of ratings | — | 1.9K — better |
| Update frequency | Every 38 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 2 MB | 401 MB |
| Age rating | 4+ | 12+ |
| Developer | NagisaWorks, K.K. | 1N1 |
Customer experience
Human Devolution
Project Clean Earth
Bugs and requests
Human Devolution
Not enough reviews yet to summarise bugs or requests.
Project Clean Earth
Reported bugs
3 issues- Purchased items not being delivered
- Crashes and freezes on certain devices
- Incorrect pricing and charges for in-app purchases
Requested features
4 requests- Multiplayer co-op mode
- More character customization options
- Improved balance and difficulty scaling
- Ability to quickly use stamina on beaten levels
In-app purchases
Human Devolution
No in-app purchases
Project Clean Earth
- Welcome Package$2.99
- Monthly Premium$3.99
- Intermediate Pack$4.99
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- Guerrilla Special Price$4.99
- Ad-Free Package$5.99
- Advanced Pack$6.99
- Gun Package$6.99
- Turret Package$6.99
- Buff Package$6.99
- Growth Fund Pack$8.99
- Growth Fund Pack 2$8.99
- Minerals Pack$10.99
- Mineral Pack2$12.99
- VIP Package3 variants$12.99
Questions
Is Human Devolution free?
Is Project Clean Earth free?
Do Human Devolution or Project Clean Earth have ads?
Which is updated more often, Human Devolution or Project Clean Earth?
Other comparisons
